Centering construction.



PATENTED JUNE il, 1907,

G. H". SCAM15/ELL` CBNTERING CONSTRUCTION.

APPLICATION FILED JULY 7, 1906.

A// HE l' AS'O l l concrete() .extending downward along the UNITEDSTA-Tris ,PATENT oFF-'ren'.

CHARLES ntsCAMMnLL, or NEW YORK, N. Y.,- AssreNoR To THE NEW JERSEY WinnCLOTH COMPANY, or TRENTCN, arrasar, con

PCRATIC'N or NEW JERSEY.

cem-Enma ooNsTRuo-rs'oni.

v,at New York city, County of New York, and

State .of New York, have'in'vented certain new and useful Improvementsin Centering Constructions, fully described and represented in thefollowing specification and 'the xo. l n y I.

- This invention relates` to theV constructlon accompanying drawiugsforming a Ipart of the same;

of 'fireproof floors, ceilings, arches and simib lar structures in whicha temporary frame,-

work or centering is used to support the material' of the structureduring the lmaking of the same and during the settin of the concrete-orother yplastic materiahi suchplastie materials be used, the obj ect ofthe invention I being toprovide a simple, cheap and effi-#"1.cientcentering vconstruction adapted cially vfor making concrete floorswith thecon# i 'i crete extending downward from the floor web l so astecover andfireproof the lowery por` tions ofthe 'b`ea1r1s,and with areproof ceilinsuspendedbelow the beams. Y I,

j or Aa full Aunderstanding of the invention.

' a detailed description of'a construction of the preferred' form,embodying all the features of thesarne, now be l with the 'accompanyingrawing's forming a;

art ,of this specification, and the features orming the inventionlparticularly. pointed Y out in the Claims. v

In the drawings :,fFigure 1 is a cross sec;v tion of the beams andcentering, ready for ilm 1n the concrete. 2 is a section on the line 2of Fig. 1 with the concrete filled in suspended ceilin in place.

on the centering, the centering and concrete being partly broken away toshow thedconstruction. Fig.- 3 is a cross section similar to Fig. 1 withthe .floorl completed before removal of the centering. Fig. 4 is a viewsimilar to Fig. 3, with the centering removed and a Fig. 5 4is aperspective View o one of the centering supporting'clips and hangers.

Referring `to the drawings, A are the common flanged beams and the flooris shown as consisting of the ordinary web of concrete B at Jthe topsofthe beams, and the bodiesof webs ofthe beams and around and under thebottom flange of the beams, so that"l` the Specification of LettersPatent. Application mei my 7,1908. sgml r9. 32eme,

ven, inconnection gamme .nm-11,1907.'

beams are Covered and protected onftheir lunder sides by a 'substantiallayer of concrete. The 'concrete surrounding 'the lower-.flanges of "thebeams is sup orted by the clips D placed on the beamu anges at asuitable distance so 'as 'topermit ,the concrete to be worked'under thebeam andaround `thecli' in lillingit in. VThese\clipsDare .preferab yof. the form. showin and zconbisti .of marrowmetal .plates` extendingunder the beams 'and slit at their4 oppositeendsto form-arms -1 by:-

which the clips' are supported .ouille-,beam

,flan es, and 4to provdegpairs ofarms eX-1'l e beams, the arms l2 fb`eten 'inbelow Q l prefers. ly inclined outward Aand mward'an' ooked asshown, andffthearm 3fb" ex'.

Atelplded downward and formed withfa ook lfadapted- Ato support4 thecentering hanger, andfab suspended ceiling iftha .latte:be;used,

described hereafter; .Thesecli 'except' as inaecordance with t resentinvention", .are fullyvdeseribed' and claimed I in U'ndStatesletqraflant No,-7s6,289.

The centering is 'supported and formed as follows; Theffarms .3cofadjacent clips sup-' rtfbytheiqhooks the centering angersv whichareshown aafxnetal bars arranged ledgewise `lvertical y, for securingthe restrengthwrth light material, and havgulred at their ends; twoupwardly extending rovided lwith openings 6' to receive 4. The hangers Ealso' have-their armsl 5 the hoo 4 middle horizontal portions 7 'deressed,with

higher portions 8 on each-side, t e lower and hierher portions of thehangers E being of sulicient' width@4 toreceive the j,centeringj'oists.,` U on'tle higher portions 8 of the hangersrest'the centeringjoists F, and upon these joists are sup orted the soffit boards G belowthe beams through which the arms 8, pass and the haunch boards H, thesehaunch boards being shownas Vertical,4 although it will be understoodthat they may be' inclined, if desired. These haunch boards are shown asformedbyseparate boards arf ran ed ed ewise one above -the other and helto et er by nailnr boards 10 over the joints, t e haunch boar s thus beinglbuilt up to the proper'heivht. The haunc boards are.'shown as heldrigidly in-position and properlyv Aspaced from` .the beamlwebs braces'l1, which maybe short pieces of woot?, as shown. j Upon the boards 1 0are supportings 'ani a brief description. The clips E having been placedin position on the beams and the suffit boards G raised into position onthe joists F, the hangers E are hooked on to the ,hooks 4 by the hangerarms 5, and the centering joists F then placed in position on the higherportions 8 o f the hangers, as shown in Figsl to 3. The haunclifboards Hare then placed in position on o' posite -sidesof the sott .bards G andthe ot er parts of the centering put in place, completing the centeringas'shown 1n Fifa 1. The beam pr tec-tioncdncreteC an floor concrete Bare then' filled in, to form the floor and beam protectiomffand allowedto set, Thecentering is then removed by` first knocking the'joists F.from the'higher portions 8 to the lowerv portions 7 of the hangers E,which lowers the centering sufiiciently so that all the parts of thecentering maybe withdrawn from betweenv the joists F and the floor, andthe joists will then be removed by drawing them' f out-of the hangersfand the latterthen rehooks4 and drop the moved, or by raisingthehangers'and joists4 sufficiently tounhook the hangers from the joists with tire hangers.

After the centeri leaving the door. an beam Vprotection-as shown in Fig.4,"a suspended ceiling may be sup ortedby the arms 3, as shown, theoeil-- ing ars L being placed in and supported by the hooks 4 and theusual ceiling of metallic lathing l2 and plaster M supported by theseceiling bars.

l t will bc understood that the invention is not limited to clips havingthe arms=2 for* supportingthe beam protection, nor to the particularform of'other details illustrated, ut that the construction shown 'maybe va- Wha't is claimed is:

l. 'lhi` combination with 4flanged beams, oli clips engaging the 'bottomflanges of' the beams and having depending arms, metal han ers extendingbeta-'cen and:supported b y t c depending arms of adjacent clips, andcentering supported by said hangers.

2. The combination with flanged beams,

rled widely within the scope of the claims'.

has been removed,

v l l l 1 of clips engaging the bottom flanges on both hookcdnarms,metalliangers extending between and lsupported by the depending arms ofadjacent clips, and centering supported by said hangers.

3. The-combination with flanged beams, of clips engaging the bottomflanges of the beams and having depending hooked arms,

'soflit boards through which thc arms extend,- metal hangersextendingbetween and snpported yby the depending arms of adjacent clips,centering joists extendingvtransverscl y ofthe beams and supported'bysaid hangers,

haunch boards on said" supported by said haunch boards.

4. The combination -with fianged beams,

of clips engaging the' bottom flanges on both Joists, and centering'sides of the beams and having depending 55 sides of the Vbeams andhaving arms extend-- ing below the beams for supporting the concrete:beam rotection, de nding 'hooked arms on the c ips extending lowItheline of beampmtectiOn, metal hangers extending between and supportedby the depending armsef-adjacent clips, and centering sup-l ported bysaid hangers. i l i "5. The combination with beams A, of clips D on thebottomflanges having thc depend;

ing h ooked arms 3, and metalcentering .hangers E extending between andsupported by the arms 3 of adjacent clips.

6, The combinatioawith beamsA,.ofaclips' D. on the bottom flangeshavingthe dependinghooked arms -3, and metal centering hangers E, said hangersE havingthe sus'.- pending arms 5, an upper surfaceor surfaces 8 lforsupport of the centering when in use, and a lower surface 7 for loweringthe centermg.

7; 'lhe combination with beam A, of clips l) on the bottom flangeshaving the de nding hooked arms 3, centering hanger Epleiaving thesuspending arms 5, and'supporting surfaces 7, 8, at difl'erentelevations, substantially as and for thevpurposes described.

ln testimon whereof, I have hereunto set my hand, in t xe presence oftwo subscribing witnesses.

f lfVitnesses:

A. Wni'rs, (1. J. SAwYEn.

